Microdredging system and method of using the same

ABSTRACT

Microdredging systems comprising a pumping platform and loading platform are described. In certain embodiments, system operates autonomously and is adapted to allow the loading platform undock from the pumping platform for disposal of the removed sediment.

FIELD

The present disclosure relates to a microdredging system comprising oneor more buoyant platforms that are adapted to remove sediment from belowthe surface of a body of water.

BACKGROUND

Methods of dredging a body of water often implement the use of largepiece of excavation equipment supported on a barge and requiring the useof one or more onboard operators. These methods are often expensive andcan only be accomplished at depths at which the excavator can reach.Other types of dredging systems implement the use of barges that alsorequire the use of one or more onboard operators and periodic, expensiveimplementation. In addition, most systems are limited in that operationsmust be ceased when the platform is loaded with sediment, requiring theentire system to be moved to the nearest accessible land or distantaquatic dumping grounds for offloading. Accordingly, there remains aneed to develop dredging systems that are relatively inexpensive and arecapable of a continuous operating schedule that does not necessarilyrequire the constant presence of onboard operators.

SUMMARY

Described herein is a system comprising:

-   -   a buoyant pumping platform comprising at least one suction        device adapted to deploy to a detected location below a surface        of a body of water where sediment is located, and raise the        sediment;    -   a location device adapted to determine the detected location;        and    -   a buoyant loading platform adapted to engage with the buoyant        pumping platform, wherein said loading platform is adapted to        receive the raised sediment.

Also described herein is a method comprising:

-   -   delivering a microdredger system to a primary site on a surface        of a body of water, said microdredger system comprising a        buoyant loading platform, a buoyant pumping platform, at least        one suction device, and a location device;    -   providing a detected location of sediment below the surface of        the body of water through the use of the location device;    -   deploying the at least one suction device to the detected        location;    -   raising the sediment from the detected location via the at least        one suction device;    -   loading the raised sediment onto the buoyant loading platform;    -   moving the buoyant loading platform to a secondary site; and    -   discharging the raised sediment from the buoyant loading        platform.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view of an exemplary pumping platform.

FIG. 2 is a perspective illustration of an exemplary pumping platform.

FIG. 3 is a top view of an exemplary pumping platform.

FIG. 4 is a top view of an exemplary pumping platform with the toppanel/cover removed.

FIG. 5 is a side view of an exemplary pumping platform.

FIG. 6 is a front view of an exemplary pumping platform.

FIG. 7 is an exploded view of an exemplary loading platform.

FIG. 8 is a perspective illustration of an exemplary loading platform

FIG. 9 is a top view of an exemplary loading platform.

FIG. 10 is a top view of an exemplary loading platform with toppanel/cover removed.

FIG. 11 is a rear view of an exemplary loading platform.

FIG. 12 is a side view of an exemplary loading platform.

FIG. 13 is a front view of an exemplary loading platform.

FIG. 14 is a side view of a pinion stepper with roller.

FIG. 15 is a side view of an exemplary microdredging system comprising aloading platform docked to a pumping platform.

DETAILED DESCRIPTION

The following is a description of exemplary microdredging systems andcomponents thereof. The embodiments described herein are exemplary innature and are not intended to be limited in structure or application.

As used in this specification and the appended claims, the articles “a,”“an,” and “the” include plural referents unless expressly andunequivocally limited to one referent.

Described herein is a system comprising:

-   -   a buoyant pumping platform comprising at least one suction        device adapted to deploy to a detected location below a surface        of a body of water where sediment is located, and raise the        sediment;    -   a location device adapted to determine the detected location;        and    -   a buoyant loading platform adapted to engage with the buoyant        pumping platform, wherein said loading platform is adapted to        receive the raised sediment.

Also described herein is a method comprising:

-   -   delivering a microdredger system to a primary site on a surface        of a body of water, said microdredger system comprising a        buoyant loading platform, a buoyant pumping platform, at least        one suction device, and a location device;    -   providing a detected location of sediment below the surface of        the body of water through the use of the location device;    -   deploying the at least one suction device to the detected        location;    -   raising the sediment from the detected location via the at least        one suction device;    -   loading the raised sediment onto the buoyant loading platform;    -   moving the buoyant loading platform to a secondary site; and    -   discharging the raised sediment from the buoyant loading        platform.

In certain embodiments, the buoyant loading platform is adapted to dockand undock from the buoyant pumping platform. In certain embodiments,the buoyant loading platform is adapted to dock and undock from thebuoyant pumping platform through the use of one or more electromagnets.In certain embodiments, the buoyant pumping platform is adapted totrigger the operation of the suction device upon the docking of thebuoyant loading platform. In certain embodiments, the buoyant loadingplatform comprises a load sensor. In certain embodiments, the loadsensor comprises a weight sensor or a buoyancy sensor. In certainembodiments, the load sensor is adapted to determine a capacity of thebuoyant loading platform for receiving the sediment. In certainembodiments, the buoyant loading platform is adapted to undock from thebuoyant pumping platform as determined by the load sensor. In certainembodiments, the buoyant loading platform is adapted to transport thesediment to a remote site after undocking from the buoyant pumpingplatform. In certain embodiments, the buoyant loading platform isadapted to transport the sediment to a remote site through the use of alocomotion system. In certain embodiments, the locomotion systemcomprises at least one of a propeller system, a wheel system, a tracksystem, or jet propulsion.

In certain embodiments, the location device comprises at least one of anecho sounder, a remote controller, or a GPS locater. In certainembodiments, the buoyant pumping platform comprises a motion system. Incertain embodiments, the motion system comprises at least one of apropeller system, a wheel system, a track system, or jet propulsion. Incertain embodiments, the motion system comprises a wheel system. Incertain embodiments, the motion system comprises a paddle structure.

In certain embodiments, the at least one suction device comprises asuction hose. In certain embodiments, the at least one suction devicecomprises an air hose. In certain embodiments, the air hose is connectedto a spool, wherein the spool is adapted to coil and uncoil the airhose. In certain embodiments, the suction hose is adapted to coil,retract, collapse, or telescope. In certain embodiments, the suctionhose associated the air hose. In certain embodiments, the suction hoseis connected to the air hose. In certain embodiments, the spool isadapted to deploy the suction hose to the detected depth via theuncoiling of the air hose. In certain embodiments, the suction devicecomprises an air compressor. In certain embodiments, the compressor isadapted to provide compressed air to the air hose. In certainembodiments, the air hose comprises an auger spike. In certainembodiments, the auger spike is adapted to loosen the sediment at thedetected depth via agitation. In certain embodiments, the auger spike isadapted to be agitated by an action created by the spool. In certainembodiments, the suction hose is adapted to remove sediment from thedetected depth via air bubbles from the compressed air provided by theair hose.

In certain embodiments, the pumping platform comprises a sediment exittube. In certain embodiments, the sediment exit tube is adapted todeliver sediment to the buoyant loading platform. In certainembodiments, the pumping platform is adapted to deliver sediment to thebuoyant loading platform. In certain embodiments, the sediment is wet.In certain embodiments, the buoyant loading platform is adapted toseparate water from sediment. In certain embodiments, the buoyantloading platform comprises a screening system. In certain embodiments,the buoyant loading platform comprises a silt screen.

In certain embodiments, the buoyant loading platform is adapted todischarge the sediment in an aquatic environment or a terrestrialenvironment. In certain embodiments, the buoyant loading platform isadapted to discharge the sediment via a bucket system. In certainembodiments, the buoyant loading platform is adapted to discharge thesediment via a clamshell mechanism. In certain embodiments, the loadingplatform comprises a bagging or blocking system that allows for thecollection of sediment. In certain embodiments, the system is adapted toform bricks/blocks from the reclaimed sediment, thus providing a “green”alternative to simple sediment disposal.

In certain embodiments, the system further comprises at least one powersource. In certain embodiments, the at least one power source comprisesone or more of a battery, a generator, and a photovoltaic device. Incertain embodiments, the buoyant loading platform is adapted to locatethe buoyant pumping platform for docking. In certain embodiments, thebuoyant loading platform is adapted to locate the buoyant pumpingplatform for docking via communications with one or more controllers.

FIGS. 1-6 provide details regarding the structure of an exemplarybuoyant pumping platform 100. The buoyancy of the pumping platform maybe effected by any suitable means known to those of skill in the art,including the use of materials such as foam/styrofoam, air bladders,plastics, and/or hull-type water displacement structures. Floatation ofexemplary pumping platform 100 is accomplished in part by housing 65 andtires 35. Housing 65 contains battery(ies) 29, microcontroller housing17, transducer 45, and transducer housing 33. A microcontroller iscontained in microcontroller housing 17. The primary components of thesuction device are also contained in housing 65, including air tank 43,compressor 31, air hose 49, air hose spool 63, chain 19, sprocket 23,and bearing plate 69. Suction hose 51, auger spike 53 and the distal endof air hose 49 are located for primary operation below housing 65.

Pumping platform 100 operates primarily through microcontroller 21 (a“controller”), which is connected to transducer 45. Transducer 45 servesas a location device that is capable of determining when and where thesystem will operate. In certain embodiments transducer 45 comprises anecho sounder, which operates by using echo pulses to determine thedepth/location of detected sediment below the surface for removal. Incertain embodiments, transducer 45 may comprise 3-dimensional mappingtechnology. Information gathered from transducer 45 will determinewhether pumping platform 100 stays to pump sediment at a particularlocation, or continues searching for sediment removal targets. Datagathered by transducer 45 is relayed to the microcontroller contained inhousing 17, which communicates with stepper motors 13 to set thelocation of pumping platform 100 and activate the suction device,respectively.

More specifically, in certain embodiments data received from themicrocontroller is relayed to stepper motors 13 to direct the motion ofpumping platform 100. In certain embodiments, the movement and locationof pumping platform 100 can be accompanied with loading platform 200docked. Alternatively, the locomotion of pumping platform 100 andloading platform 200 can be accomplished independently, wherein loadingplatform 200 docks to pumping platform 100 subsequent to detection andlocation of a desired sediment removal target. Relaying of data tostepper motor(s) 13 will set hub chain(s) 19 into motion, which willtransfer power to hub(s) 39 and wheel(s) 35. Movement of the platformmay be enhanced by attaching paddle(s) 25 to the wheel system via lugnut extensions 61.

Data received/processed by the microcontroller may also direct theoperation of the suction system. With particular reference to FIG. 4,the microcontroller will initiate the operation of stepper motor 18,which transfers motion to sprocket 23 via chain 19. Sprocket 23 isconnected to air hose spool 63, which rests on bearing plate 69.Rotation of air hose spool 63 will unwind and release the desired lengthof air hose 49, which extends below through an aperture in housing 65.Suction hose 51 is attached to the bottom of housing 65 and is in fluidcommunication with exit tube 27. Suction hose 51 may comprise anysuitable material, and is retractable, expandable and/or telescoping innature. The proximal end of suction hose 51 is connected to housing 65.Air hose 49 is attached alongside suction hose 51, such that the releaseof a length of air hose 49 from air hose spool 63 will deploy suctionhose 51 below the surface of the water and towards a sediment removaltarget. Auger spike 53 will “anchor” the distal end suction hose 51 onthe desired sediment target. The proximal end of air hose 43 is in fluidcommunication with air tank 43, which will provide pressurized air tothe air hose upon deployment of suction hose 51. The distal end of airhose 49 is situated to provide pressurized air towards the distal end ofsuction hose 51 and auger spike 53. Turbulence created by the airhose/exiting air will loosen sediment, aided partially by movement ofauger spike 53, and send a stream of air bubbles into the distal end ofsuction hose 51. The rush of bubbles up through suction hose 51 createslift and, thus, the suction of water and sediment up though suction hose51 and into exit tube 27. As shown, in certain embodiments exit tube 27is adapted to have at least two exit apertures, allowing loadingplatform 200 to dock from either side of pumping platform 100. Aswitching valve can be implemented to switch flow of water and sedimentthough exit tube 27 to the side the loading platform docks.

Operation of the suction device can be accomplished according to anysuitable methods according to those of skill in the art. In certainembodiments, the charging of air tank 43 with air is accomplished bycompressor 31. The operation of compressor 31 may be initiated by thedocking of loading platform 200 to pumping platform 100. In certainembodiments, the docking of loading platform 200 to pumping platform 100will trigger reed switch 67, which will signal microcontroller 21 toturn on compressor 31 and initiate pumping/suction. Alternatively, or inaddition, reed switch 109 may be placed on loading platform 200 (seeFIG. 9).

Additional components of pumping platform 100 include trailing wheelframe 59 and trailing wheel 55, which can provide stability to thepumping platform in water and when a terrestrial environment isencountered. Bilge pump 37 can be used to remove any water that collectsat the bottom of housing 65. Framing 15 is implemented to support cover9, which mates to housing 65 and provides protection to the suctiondevice and other mechanical/electrical components of the pumpingplatform. Solar panel(s) 11 may be affixed to the outer surface of cover9 to provide power to the system via the charging of batteries 29.Batteries 29 may be used to power the entire system, including anynecessary microcontrollers, transducers, and stepper motors.

FIGS. 7-13 illustrate exemplary buoyant loading platform 200 that isadapted to receive sediment from pumping platform 100. The buoyancy ofloading platform 200 may be effected by any suitable means known tothose of skill in the art, including the use of materials such asfoam/styrofoam, air bladders, plastics, and/or hull-type structures.Floatation of exemplary loading platform 200 is accomplished in part bytires 81. Cover 73 covers the contents of pumping platform 200,including the battery(ies) 111, microcontroller housing 115,microcontroller 113, drivetrain stepper motor(s) 85, drive chain(s) 87and sprocket(s) 107 associated with axle 89. Also included, per FIG. 7,are pinion track 77, stepper bearing(s) 105 (floating in space), siltscreen 103, silt screen frame 95, and bucket 97. Panel(s) 79, bar 75,and frame pieces 119 provide stabilization and support to loadingplatform 200. Photovoltaic panel 71 may be affixed to cover 73 toprovide power/recharging to batteries 111.

Loading platform 200 operates primarily through microcontroller 113 (a“controller”), which is communication with drivetrain stepper motor(s)85. Microcontroller 113 can provide commands to motor(s) 85, which canactivate the drivetrain axle 89 via chains 87 and sprockets 107. Poweris transferred from axle 89 to hub(s) 91, which effect locomotion of theplatform via tire(s) 81 and paddle wheel(s) 83 affixed by lugnutextensions 117. Trailing wheel 101 is affixed by frame 99, which mayprovide further support to the locomotion of platform 200 on land or inthe water.

Upon docking to pumping platform 100, loading platform 200 may receivewet sediment from exit tube 27 via an aperture in cover 73. Withparticular reference to FIG. 10, wet sediment will enter the interior ofloading platform 200 where it is introduced to silt screen 103. Solidsare collected on the silt screen, while water is free to pass below tobucket 97. As seen in FIG. 7, bucket 97 may comprise two ½ shells. These½ shells may be adapted to where they are not water tight when in theclosed position, thereby allowing water that collects in bucket 97 fromthe silt screen to pass back into the aquatic environment. Load sensorsmay be implemented to communicate with microcontroller 113 when theloading platform is filled to capacity. Upon doing so, themicrocontroller of the loading platform and/or pumping platform caninstruct loading platform 200 to undock from pumping platform 100, andmobilize the drivetrain of the loading platform to head to the desiredlocation for unloading.

Unloading of solids from loading platform 200 may occur at an aquatic orterrestrial location (a secondary site) away from the sediment removal.Unloading of the sediment collected on silt screen 103 is accomplishedprimarily by pinion stepper motors (not shown in FIG. 7) located at eachcorner of bucket 97. An exemplary pinion stepper 112 is shown in FIG.14, which is associated with pinion bearing(s) 105. As shown in FIG. 10,pinion bearing(s) 105 are associated with the corners of bucket 97. Uponreceiving commands to dump from microcontroller 113, the pinion stepperswill “climb” the arc of pinion track 77, resulting in the opposingrotational motion of the ends of the two ½ shells of bucket 97. Thus,bucket 97 opens via a “clamshell” mechanism. Silt screen 103, fastenedto bucket 97 via silt screen frame 95, will mimic the motion of theopening bucket, such that the collected sediment will slide off the siltscreen and down through the open bucket to the desired dump site.

FIG. 15 demonstrates an exemplary microdredger with loading platform 200docked to pumping platform 100. As noted above, the operation of theindividual platforms may be determined by commands received from one ormore microcontrollers. In certain embodiments, the controllers of theloading platform and the pumping platform can be in communication witheach other, such as by wireless communication (e.g., radio frequency viaantennae). In certain embodiments, the controllers on either platformcan send and receive operation commands from the other. In certainembodiments, the controller on the pumping platform can provide commandsfor both the suction device and the locomotion of the pumping platformon the surface of the water, while in another embodiment separatecontrollers can provide those respective commands. In certainembodiments, operation of the suction device may be initiated from acommand received from the pumping platform controller, which istriggered by a signal received by the docking of the loading platform tothe pumping platform.

In certain embodiments, the operation of the system may be determined bycommands received from an offsite location, i.e., not the primarylocation of sediment removal. For example, in certain embodiments theoperation of the system is determined by an offsite beacon controller.In certain embodiments, the beacon controller may be placed in alocation nearby to the pumping operation, such as a sediment dischargesite (i.e., secondary site). In certain embodiments, locomotion,pumping, undocking, and the location of sediment discharge can all becontrolled by commands received from a primary beacon controller. Incertain embodiments, the pumping platform and loading platform may eachcomprise a controller associated with a battery and antenna, therebyallowing three-way communication between platforms and the beaconcontroller. This will allow for platforms to recognize the location ofeach other at all times, thereby allowing for the determination of a newsediment target and the re-docking of the loading platform to thepumping platform. The beacon controller can contain preset commands, orreceive commands from another offsite source (e.g., communicationsreceived from a mobile device or computer via WiFi and/or LTE).Communication with the system may take place by any suitable wired orwireless communication methods known to those of skill in the art,including satellite, GPS, infrared, Bluetooth, and/or WiFi. In certainembodiments, one or more microdredgers can receive continuous commandsfrom the beacon controller, hypothetically allowing the devices tooperate autonomously 24 hours/day.

In other embodiments, the microdredging system may receive commandsdirectly from an offsite or onsite control center, such as a remotecontrol, computer system, or a mobile device comprising softwaredesigned to interface with the controllers and onboard electronics ofthe pumping platform and the loading platform. In this embodiment, thesystem would not require intermediate communications through a beaconcontroller.

In other embodiments, the system may operate autonomously, wherein thecommands provided by the controllers are determined by an onboardsoftware and electronics system that relies on input from variousexternal sensors (e.g., load sensors, location devices, docking sensors,etc.). In certain embodiments, the system may operate semi-autonomously,wherein at least some system commands are determined by communicationsreceived from an independent source such as control center and/or abeacon controller.

The foregoing descriptions and embodiments have been provided forpurposes of illustration. They are not intended to be exhaustive orlimit the scope of what is described and/or claimed herein.

Additional Embodiments

A system comprising:

-   -   a buoyant pumping platform comprising at least one suction        device adapted to deploy to a detected location below a surface        of a body of water where sediment is located, and raise the        sediment;    -   a location device adapted to determine the detected location;        and    -   a buoyant loading platform adapted to engage with the buoyant        pumping platform, wherein said loading platform is adapted to        receive the raised sediment.

The system according to embodiment 1, wherein the buoyant loadingplatform is adapted to dock and undock from the buoyant pumpingplatform.

The system according to any one of embodiments 1-2, wherein the buoyantloading platform is adapted to dock and undock from the buoyant pumpingplatform through the use of one or more electromagnets.

The system according to any one of embodiments 1-3, wherein the buoyantpumping platform is adapted to trigger the operation of the at least onesuction device upon the docking of the buoyant loading platform.

The system according to any one of embodiments 1-4, wherein the buoyantloading platform comprises a load sensor.

The system according to embodiment 5, wherein the load sensor comprisesa weight sensor or a buoyancy sensor.

The system according to any one of embodiments 5-6, wherein the loadsensor is adapted to determine a capacity of the buoyant loadingplatform for the raised sediment.

The system according to embodiment 7, wherein the buoyant loadingplatform is adapted to undock from the buoyant pumping platform uponreaching the capacity.

The system according to any one of embodiments 2-8, wherein the buoyantloading platform is adapted to transport the sediment to a remote siteafter undocking from the buoyant pumping platform.

The system according to any one of embodiments 1-9, wherein the buoyantloading platform is adapted to transport the sediment to a remote sitethrough the use of a locomotion system.

The system according to embodiment 10, wherein the locomotion systemcomprises at least one of a propeller system, a wheel system, a paddlesystem, a track system, or jet propulsion.

The system according to any one of embodiments 1-11, wherein thelocation device comprises at least one of an echo sounder, a remotecontroller, or a GPS locater.

The system according to any one of embodiments 1-12, wherein the buoyantpumping platform comprises a motion system.

The system according to embodiment 13, wherein the motion systemcomprises at least one of a propeller system, a wheel system, a paddlesystem, a track system, or jet propulsion.

The system according to any one of embodiments 13-14, wherein the motionsystem comprises a wheel system.

The system according to embodiment 15, wherein the wheel systemcomprises a paddle structure.

The system according to any one of embodiments 1-16, wherein the atleast one suction device comprises a suction hose.

The system according to any one of embodiments 1-17, wherein the atleast one suction device comprises an air hose.

The system according to embodiment 18, wherein the air hose is connectedto a spool, and wherein the spool is adapted to coil and uncoil the airhose.

The system according to any one of embodiments 18-19, wherein thesuction hose is adapted to coil, retract, collapse, or telescope.

The system according to any one of embodiments 17-20, wherein thesuction hose is associated the air hose.

The system according to any one of embodiments 17-21, wherein thesuction hose is connected to the air hose.

The system according to any one of embodiments 19-22, wherein the spoolis adapted to deploy the suction hose to the detected depth via theuncoiling of the air hose.

The system according to any one of embodiments 1-23, wherein the suctiondevice comprises an air compressor.

The system according to embodiment 24, wherein the compressor is adaptedto provide compressed air to the air hose.

The system according to any one of embodiments 18-25, wherein the airhose comprises an auger spike.

The system according to embodiment 26, wherein the auger spike isadapted to loosen the sediment at the detected location via agitation.

The system according to any one of embodiments 26-27, wherein the augerspike is adapted to be agitated by an action created by the spool.

The system according to any one of embodiments 17-28, wherein thesuction hose is adapted to remove the sediment from the detectedlocation via air bubbles from the compressed air provided by the airhose.

The system according to any one of embodiments 1-29, wherein the pumpingplatform comprises a sediment exit tube.

The system according to embodiment 30, wherein the sediment exit tube isadapted to deliver the raised sediment to the buoyant loading platform.

The system according to any one of embodiments 1-31, wherein the pumpingplatform is adapted to deliver the raised sediment to the buoyantloading platform.

The system according to any one of embodiments 1-32, wherein the raisedsediment is wet.

The system according to any one of embodiments 1-33, wherein the buoyantloading platform is adapted to separate water from the raised sediment.

The system according to any one of embodiments 1-34, wherein the buoyantloading platform comprises a screening system.

The system according to any one of embodiments 1-35, wherein the buoyantloading platform comprises a silt screen.

The system according to any one of embodiments 1-36, wherein the buoyantloading platform is adapted to discharge the sediment in an aquaticenvironment or a terrestrial environment.

The system according to any one of embodiments 1-37, wherein the buoyantloading platform is adapted to discharge the sediment via a bucketsystem.

The system according to any one of embodiments 1-37, wherein the buoyantloading platform is adapted to discharge the raised sediment via aclamshell mechanism.

The system according to any one of embodiments 1-39, further comprisingat least one power source.

The system according to embodiment 40, wherein the at least one powersource comprises one or more of a battery, a generator, and aphotovoltaic device.

The system according to any one of embodiments 1-41, wherein the buoyantloading platform is adapted to locate the buoyant pumping platform fordocking.

The system according to any one of embodiments 1-42, wherein the buoyantloading platform is adapted to locate the buoyant pumping platform fordocking via communications between one or more controllers.

The system according to embodiment 43, wherein the buoyant loadingplatform and the buoyant pumping platform each comprise at least onecontroller.

The system according to any one of embodiments 43 and 44, furthercomprising a beacon controller adapted to communicate with thecontrollers of the buoyant loading platform and/or the buoyant pumpingplatform.

The system according to any one of embodiments 1-43, wherein the buoyantloading platform comprises a bagging or blocking system that allows forthe collection of the raised sediment.

A method comprising:

-   -   delivering a microdredger system to a primary site on a body of        water, said microdredger comprising a buoyant loading platform,        a buoyant pumping platform, at least one suction device, and a        location device;    -   providing a detected location of sediment below the surface of        the body of water through the use of the location device;    -   deploying the at least one suction device to the detected        location;    -   raising the sediment from the detected location via the at least        one suction device;    -   loading the raised sediment onto the buoyant loading platform;    -   moving the buoyant loading platform to a secondary site; and    -   discharging the raised sediment from the buoyant loading        platform.

The method according to embodiment 47, wherein the buoyant loadingplatform is docked to the buoyant pumping platform during loading of theraised sediment.

The method according to embodiment 48, wherein buoyant loading platformis undocked from the buoyant pumping platform prior to moving to thesecondary site.

The method according to any one of embodiments 47-49, wherein locomotionof the buoyant loading platform on the body of water comprises the useof commands provided by a controller.

The method according to any one of embodiments 47-50, wherein locomotionof the buoyant pumping platform on the body of water comprises the useof commands provided by a controller.

The method according to embodiment 51, wherein the controllers are inwireless communication with each other.

The method according to any one of embodiments 50-52, wherein thecommands of one ore more of the controllers are provided bycommunications from an offsite control center and/or an offsite beaconcontroller.

The method according to any one of embodiments 47-53, further comprisingreturning buoyant loading platform to the primary site after dischargingthe raised sediment.

The method according to any one of embodiments 47-54, wherein thebuoyant loading platform is docked to the buoyant pumping platform atthe primary site.

The method according to embodiment 55, wherein the buoyant loadingplatform undocks from the buoyant pumping platform prior to moving tothe secondary site.

The system according to embodiment 1, wherein the buoyant loadingplatform and the buoyant pumping platform each independently comprises alocomotion system that allows platforms to travel about the surface ofthe body of water.

The system according to embodiment 57, wherein the locomotion system ofthe buoyant loading platform is adapted to allow the loading platform toabout a terrestrial surface.

1. A system comprising: a buoyant pumping platform comprising at leastone suction device adapted to deploy to a detected location below asurface of a body of water where sediment is located, and raise thesediment; a location device adapted to determine the detected location;and a buoyant loading platform adapted to dock and undock from thebuoyant pumping platform through a docking system, said loading platformbeing further adapted to receive the raised sediment and discharge theraised sediment, wherein the buoyant loading platform and the buoyantpumping platform each comprises a locomotion system that allows theplatforms to independently travel about the surface of the body ofwater.
 2. The system according to claim 1, wherein the docking systemcomprises one or more electromagnets.
 3. The system according to claim1, wherein the buoyant pumping platform is adapted to trigger operationof the at least one suction device upon the docking of the buoyantloading platform.
 4. The system according claim 1, wherein the buoyantloading platform comprises a load sensor.
 5. The system according toclaim 4, wherein the load sensor comprises a weight sensor or a buoyancysensor.
 6. The system according to claim 4, wherein the load sensor isadapted to determine a capacity of the buoyant loading platform for theraised sediment received.
 7. The system according to claim 6, whereinthe buoyant loading platform is adapted to undock from the buoyantpumping platform upon reaching the capacity.
 8. The system according toclaim 1, wherein the locomotion system of the buoyant loading platformallows for the transport of the received sediment to a secondary sitewhen undocked from the pumping platform.
 9. The system according toclaim 8, wherein the locomotion system comprises at least one of apropeller system, a wheel system, a paddle system, a track system, orjet propulsion.
 10. The system according to claim 1, wherein thelocation device comprises at least one of an echo sounder, a remotecontroller, or a GPS locater.
 11. The system according to claim 1,wherein the locomotion system of the buoyant pumping platform comprisesat least one of a propeller system, a wheel system, a paddle system, atrack system, or jet propulsion.
 12. The system according to claim 8,wherein the locomotion system comprises a wheel system with an optionalpaddle structure.
 13. The system according to claim 1, wherein the atleast one suction device comprises a compressor, a suction hose, and anair hose.
 14. The system according to claim 13, wherein the suction hoseis adapted to coil, retract, collapse, or telescope.
 15. The systemaccording to claim 13, wherein the at least one suction device furthercomprises an auger spike adapted to loosen the sediment at the detectedlocation via agitation.
 16. The system according to claim 1, wherein thepumping platform is adapted to deliver the raised sediment to thebuoyant loading platform via a sediment exit tube in fluid connectionwith the at least one suction device.
 17. The system according to claim1, wherein the buoyant loading platform is adapted to discharge theraised sediment in an aquatic environment or a terrestrial environment.18. The system according to claim 1, further comprising a power sourceselected from at least one of a battery, a generator, or a photovoltaicdevice.
 19. The system according to claim 1, wherein the buoyant loadingplatform and the buoyant pumping platform comprise a first controllerand a second controller, respectively.
 20. The system according to claim19, wherein the locomotion of the buoyant loading platform is determinedby commands received from the first controller, and the locomotion ofthe buoyant pumping platform is determined by commands received from thesecond controller.
 21. The system according to claim 8, wherein thelocomotion system of the buoyant loading platform is adapted to allowthe loading platform to travel on a terrestrial surface.
 22. The systemaccording to claim 1, wherein the system operates autonomously orsemi-autonomously.
 23. The system according to claim 22, wherein thatdeployment of the suction device, raising the sediment, discharging theraised sediment, or travelling of the loading platform and/or pumpingplatform about the surface of the body of water is determined bycommands received from at least one controller in communication with oneor more external sensors.
 24. A method comprising: delivering amicrodredger system to a primary site on a body of water, saidmicrodredger comprising a buoyant loading platform, a buoyant pumpingplatform, at least one suction device, and a location device; providinga detected location of sediment below the surface of the body of waterthrough the use of the location device; deploying the at least onesuction device to the detected location; raising the sediment from thedetected location via the at least one suction device; loading theraised sediment onto the buoyant loading platform; moving the buoyantloading platform to a secondary site; and discharging the raisedsediment from the buoyant loading platform.